Science and technology

SAB advisory panel rejects dioxin risk characterization

Article Abstract:

An EPA Science Advisory Board advisory panel recently rejected the agency's proposed risk characterization for dioxin. In its decision, the panel stated that the final volume that characterized the risk of dioxin to humans was misleading and erroneous, although it agreed with most of the findings contained in the 2,000-page risk assessment report. Observers believe that it is now practically impossible for the EPA to finalize its dioxin review by the self-imposed Sep. 1995 deadline.

Dioxin risk: are we sure yet?

Article Abstract:

The EPA is close to completing its dioxin risk assessment and risk characterization program, which aims to comprehensively examine the health threats posed by this highly toxic chemical to human beings. The draft report containing the results of the process, which is expected to be finalized in Sep. 1995, will deal with issues such as the noncancer effects of dioxin, its ability to disrupt the endocrine, immune and reproductive systems and its effect on fetal development.

The EPA is set to implement proposed air pollution regulations covering several municipal solid waste and medical waste incinerators in line with the results of its draft reassessment highlighting the adverse health effects of dioxin and dioxin-like substances. EPA officials are confident that these policies will help reduce emissions by as much as 99% and will result in the upgrading of incinerators to meet new standards.